Press release
Telemeter scales were initially introduced around 1852 to measure the distance travelled by sound. Activated right after the flash of lightening and stopped when the thunder is heard, the hand of the chronograph shows the distance in kilometres of the phenomenon.
The circular steel case with a diameter of 41 mm houses the caliber L688, a self-winding mechanical movement with a column-wheel chronograph mechanism exclusively developed for Longines, which can be admired through a transparent case back. The chronograph is equipped with a date aperture at 4h30, a small second at 9 o'clock, a 30-minutes counter at 3 o'clock and a 12-hours counter at 6.
Besides the appealing technical features, The Longines Telemeter Chronograph also attracts the eye by its harmonious design embodied by a subtle fusion of tradition and a contemporary spirit. The white lacquered dial with 9 black Arabic numerals features the red telemeter scale and a spiral tachymeter scale in the same colour. The blued steel Breguet hands, indicating hours and minutes, add a touch of elegance to this exceptional model fitted on a black alligator strap.
The Longines Telemeter Chronograph
Technical specifications
Reference numbers L2.780.4.18.x
Calibre: Mechanical self-winding movement with a column-wheel chronograph mechanism
Calibre L688 (ETA A08 L01) 13¼ lines, 27 jewels, 28'800 vibrations per hour Power reserve: 54 hours
Functions Hours, minutes, seconds, date, telemeter, tachymeter.
Chronograph
Central seconds sweep
Dragging 30-minute counter at 3 o'clock
Dragging 12-hour counter at 6 o'clock
Case: Circular, 41 mm, stainless steel
Transparent sapphire case back
Dial: White lacquered with 9 black Arabic numerals
Telemeter scale, red
Spiral tachymeter scale, red
Small seconds at 9 o'clock
Date aperture at 4:30
30-minute counter at 3 o'clock
12-hour counter at 6 o'clock
Hands: Blued steel Breguet hands (hours and minutes)
Blued steel counter-weight line pear hand (seconds)
Water-resistant: 3 bar (30 meters)
Glass: Sapphire cristal with anti-reflective coating on the underside
Strap: Black alligator with buckle
